The creep of coral sand is a critical factor that needs to be considered in geotechnical design of engineering facilities along coastal areas. In this study, a new fractional order creep model for coral sand is developed by extending the previous work on fractional (visco)plasticity. Unlike traditional fractional creep models that use viscoelasticity, this model uses a fractional order flow rule to capture the creep behaviour of coral sand. To validate the proposed model, test results of coral sand from the available literature are simulated, where good agreement between the model predictions and test results is observed.

中文翻译：

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珊瑚砂的分数阶蠕变模型

沿海地区工程设施的岩土设计中必须考虑到珊瑚砂的蠕变。在这项研究中，通过扩展先前关于分数（粘性）可塑性的工作，开发了一种新的珊瑚砂分数阶蠕变模型。与使用粘弹性的传统分数蠕变模型不同，此模型使用分数阶流规则来捕获珊瑚砂的蠕变行为。为了验证提出的模型，对现有文献中珊瑚砂的测试结果进行了模拟，并观察到了模型预测与测试结果之间的良好一致性。